Solution: X=6
Detailed explanation:
In this problem we're asked to find "x" or the unknown.
The first step is to subtract 11x from both sides.

Next, subtract 79 from both sides.

To finish this off, divide both sides by -11.

Voila! There's our answer!
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The second one, 82% is Erin's highest score
Answer:
k = 11
Step-by-step explanation:
let the points be A(-2,5), B(2,8), C(6,K).
for the points to be collinear slope of line AB maust be equal to line BC.
slope of line AB = 
slope of line BC = 
therefore 
therefore k = 8 + 3
k = 11
Answer: D.
Step-by-step explanation:
52,165 + 49,872 = 102,037